Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Sydney to Siem Reap from $461

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 31/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SAI
3 Jun — 10 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sydney to Siem Reap

Enter your travel dates to find the best prices.

Cheapest flights from Sydney to Siem Reap
Explore the most affordable flight options available from Sydney to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 May 2026.

Wed 22/710:15
SYD
-
SAI
1 stop14h 40m
Multiple Airlines
Wed 5/822:35
SAI
-
SYD
1 stop32h 35m
Multiple Airlines
Deal found 1/5$907
Thu 23/710:15
SYD
-
SAI
1 stop25h 30m
Multiple Airlines
Wed 5/822:35
SAI
-
SYD
1 stop32h 35m
Multiple Airlines
Deal found 1/5$910
Fri 24/720:35
SYD
-
SAI
2 stops21h 15m
Multiple Airlines
Sun 2/822:35
SAI
-
SYD
1 stop32h 35m
Multiple Airlines
Deal found 29/4$914
Thu 23/710:15
SYD
-
SAI
1 stop25h 30m
Multiple Airlines
Sun 2/822:35
SAI
-
SYD
1 stop32h 35m
Multiple Airlines
Deal found 29/4$915
Wed 22/710:15
SYD
-
SAI
1 stop14h 40m
Multiple Airlines
Tue 4/818:30
SAI
-
SYD
1 stop12h 40m
Multiple Airlines
Deal found 1/5$922
Fri 24/710:15
SYD
-
SAI
1 stop13h 50m
Multiple Airlines
Tue 4/819:05
SAI
-
SYD
2 stops45h 15m
Multiple Airlines
Deal found 1/5$924
Thu 23/710:15
SYD
-
SAI
1 stop25h 30m
Multiple Airlines
Thu 6/815:00
SAI
-
SYD
1 stop16h 10m
Multiple Airlines
Deal found 1/5$925
Fri 24/720:35
SYD
-
SAI
2 stops21h 15m
Multiple Airlines
Mon 3/815:00
SAI
-
SYD
1 stop16h 10m
Multiple Airlines
Deal found 29/4$929
Tue 21/715:10
SYD
-
SAI
1 stop20h 35m
Multiple Airlines
Thu 6/815:00
SAI
-
SYD
1 stop16h 10m
Multiple Airlines
Deal found 1/5$939
Sun 19/715:10
SYD
-
SAI
1 stop20h 35m
Multiple Airlines
Thu 6/815:00
SAI
-
SYD
1 stop16h 10m
Multiple Airlines
Deal found 1/5$940
Wed 22/710:15
SYD
-
SAI
1 stop14h 40m
Multiple Airlines
Mon 3/815:00
SAI
-
SYD
1 stop16h 10m
Multiple Airlines
Deal found 1/5$945

Find flight deals from Sydney to Siem Reap

Keep the following information in mind while searching for Sydney to Siem Reap flight deals. Data was last updated 4 May 2026.

Round-trip from

$838

One-way from

$461

Popular in

December

Cheapest in

September

Average price

$850
Vietnam Airlines
  • Vietnam Airlines
  • 1/9-31/10
  • 2 total stops
  • 43h 25m total
  • Sydney to Siem Reap
Search Deals
31/5
  • 31/5
  • 1 total stop
  • 20h 35m total
  • Sydney to Siem Reap
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($400 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($76 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sydney to Siem Reap that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 4 May 2026.
Use the filters below to find and compare flights from Sydney to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Thu 21/5

11:00-15:10

1 stop31h 10m

Siem Reap–Angkor Intl

Wed 27/5

10:30-06:05

1 stop16h 35m

$953

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Mon 1/6

20:35-21:30

2 stops27h 55m

Siem Reap–Angkor Intl

Wed 10/6

09:45-19:20

2 stops30h 35m

$1,053

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Sat 25/7

14:15-17:10

1 stop29h 55m

Siem Reap–Angkor Intl

Wed 5/8

18:05-08:15

2 stops35h 10m

$1,190

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Sat 25/7

14:15-18:20

2 stops31h 05m

Siem Reap–Angkor Intl

Fri 7/8

18:05-12:15

1 stop15h 10m

$1,243

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Mon 20/7

10:15-18:20

1 stop11h 05m

Siem Reap–Angkor Intl

Sat 1/8

18:05-08:15

2 stops35h 10m

$1,307

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Thu 25/6

20:35-18:20

2 stops24h 45m

Siem Reap–Angkor Intl

Fri 3/7

09:40-07:20

2 stops18h 40m

$1,362

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Sat 11/7

10:15-21:55

1 stop14h 40m

Siem Reap–Angkor Intl

Fri 17/7

18:05-12:15

1 stop15h 10m

$1,462

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Thu 21/5

10:15-18:20

1 stop11h 05m

Siem Reap–Angkor Intl

Wed 27/5

19:20-08:15

2 stops33h 55m

$1,490

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Tue 21/7

10:05-20:10

3 stops37h 05m

Siem Reap–Angkor Intl

Fri 7/8

21:10-08:00

3 stops31h 50m

$1,509

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Thu 23/7

10:00-20:10

2 stops37h 10m

Siem Reap–Angkor Intl

Fri 7/8

21:10-08:00

3 stops31h 50m

$1,509

Flights are sorted by cheapest return flights first.

Deals found on 2/5

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Best time to book a flight from Sydney to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Sydney with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sydney to Siem Reap

What is the cheapest month to book a flight from Sydney to Region of Siem Reap?

Currently, April is the cheapest month in which you can book a flight from Sydney to Region of Siem Reap (average of $444). Flying from Sydney to Region of Siem Reap in January is currently the most expensive (average of $958). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Sydney to Region of Siem Reap?

Reviews of airlines servicing Siem Reap

Get insights into the airlines that provide service to Siem Reap. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Siem Reap. Reviews last updated 4 May 2026.
Get a feel of what it's like to fly with Singapore Airlines and Vietnam Airlines from Sydney to Siem Reap by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,508 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

8.0

Boarding

8.3

Overall

8.2

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Singapore Airlines
8.2
Very Good
1,508 reviews
Singapore Airlines
8.2
Very Good
1,508 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

8.0

Boarding

8.3

Overall

8.2

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Vietnam Airlines
7.7
Good
264 reviews
Singapore Airlines
8.2
Very Good
1,508 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

8.0

Boarding

8.3

Overall

8.2

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.

Related info for your journey

Find useful and relevant information for your journey from Sydney to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Sydney to Siem Reap?

    For a flight from Sydney to Siem Reap, you will be flying from Kingsford Smith. Sydney Kingsford Smith (SYD) is just 7.5 km from the centre of the city.

  • How long is the flight from Sydney to Region of Siem Reap?

    Airlines like Singapore Airlines and Vietnam Airlines fly from Sydney to Region of Siem Reap in about 29h 55m. The time it takes to get you to your destination can typically vary by up to 1h 15m. There are 7229 km between Sydney and Region of Siem Reap. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Sydney to Siem Reap that include hotel bookings?

    Yes. In addition to deals on Sydney to Siem Reap flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Sydney to Siem Reap?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sydney to Siem Reap.

  • Can I find deals for business class flights from Sydney to Siem Reap?

    Yes. Cheapflights offers flight deals from Sydney to Siem Reap by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sydney to Region of Siem Reap?

    Currently, April is the cheapest month in which you can book a flight from Sydney to Region of Siem Reap (average of $444). Flying from Sydney to Region of Siem Reap in January is currently the most expensive (average of $958). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Sydney to Siem Reap

See prices for flight routes from nearby airports that may be better suited for you.
Sydney to Siem Reap flights
Sydney to Phnom Penh flights
Coolangatta to Siem Reap flights

Top 2 airlines flying from Sydney to Siem Reap

Discover the top 2 airlines that operate flights from Sydney to Siem Reap. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 4 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Vietnam AirlinesCheapest$698Average$911FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Singapore AirlinesCheapest$819Average$1,356FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Sydney to Siem Reap?

When you search for this flight from Sydney to Siem Reap, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Sydney to Siem Reap?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Siem Reap from Sydney.

Can Cheapflights find flights from Sydney to Siem Reap with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Sydney to Siem Reap, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Sydney to Siem Reap become cheaper?

Of course! You can now track prices for flights from Sydney to Siem Reap and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.